.bottom {
    width: 100%;
    display: flex;
    justify-content: space-evenly;
    text-align: center;
    align-items: center;
    position: fixed;
    left: 0;
    bottom: 0;
    height: 60px;
    background-color: #fff;
}
a {
    flex: 1;
    height: 60px;
    display: flex;
    flex-direction: column;
    justify-content: space-evenly;
    align-items: center;
}
img {
    width: 40%;
    height: 40%;
}
